Squirrel's unpaid work.

The squirrels in my local park have been busy picking chestnuts and throwing down from the trees to burst them open.
I watched one day as the school kids picked up all the chestnuts that the squirrels worked hard to drop down before collection.
All the school kids went home and the squirrel came down from its tree to find that all it had to show for it hard afternoons work was one chestnut.